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- /* Set flags signalling availability of kernel features based on given
- kernel version number.
- Copyright (C) 1999-2003, 2004, 2005 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- /* This file must not contain any C code. At least it must be protected
- to allow using the file also in assembler files. */
- #if defined __mips__
- # include <sgidefs.h>
- #endif
- #include <linux/version.h>
- #define __LINUX_KERNEL_VERSION LINUX_VERSION_CODE
- /* Real-time signal became usable in 2.1.70. */
- #if __LINUX_KERNEL_VERSION >= 131398
- # define __ASSUME_REALTIME_SIGNALS 1
- #endif
- /* Beginning with 2.5.63 support for realtime and monotonic clocks and
- timers based on them is available. */
- #if __LINUX_KERNEL_VERSION >= 132415
- # define __ASSUME_POSIX_TIMERS 1
- #endif
- /* On x86, the set_thread_area syscall was introduced in 2.5.29, but its
- semantics was changed in 2.5.30, and again after 2.5.31. */
- #if __LINUX_KERNEL_VERSION >= 132384 && defined __i386__
- # define __ASSUME_SET_THREAD_AREA_SYSCALL 1
- #endif
- /* We can use the LDTs for threading with Linux 2.3.99 and newer. */
- #if __LINUX_KERNEL_VERSION >= 131939
- # define __ASSUME_LDT_WORKS 1
- #endif
- /* Starting with 2.4.5 kernels PPC passes the AUXV in the standard way
- and the vfork syscall made it into the official kernel. */
- #if __LINUX_KERNEL_VERSION >= (132096+5) && defined __powerpc__
- # define __ASSUME_STD_AUXV 1
- # define __ASSUME_VFORK_SYSCALL 1
- #endif
- /* The vfork syscall on x86 and arm was definitely available in 2.4. */
- #if __LINUX_KERNEL_VERSION >= 132097 && (defined __i386__ || defined __arm__)
- # define __ASSUME_VFORK_SYSCALL 1
- #endif
- /* These features were surely available with 2.4.12. */
- #if __LINUX_KERNEL_VERSION >= 132108 && defined __mc68000__
- # define __ASSUME_MMAP2_SYSCALL 1
- # define __ASSUME_TRUNCATE64_SYSCALL 1
- # define __ASSUME_STAT64_SYSCALL 1
- # define __ASSUME_FCNTL64 1
- # define __ASSUME_VFORK_SYSCALL 1
- #endif
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